Week 12:Project-1-Meshing of Door Inner Panel Challenge

Aim

To extract midsurface of inner panel of door and mesh it according to the quality criteria given below.

Target Element Length = 4mm

S.N	Quality Criteria	Value
1	Aspect Ratio	5
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	2mm
6	Max. Length	6mm
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	20
10	Max angle Tria	120
10	Tria %	10

Methodology

1. Extract the midsurface of the inner panel using offset and auto extraction
2. Mesh the midsurface according to the given quality criteria
3. Give thickness according to the thickness of the original components

Procedure

Midsurface of the component except ribs were extracted using Geom > Midsurface > set extraction options as offset+planes+sweeps > auto extraction > select the surface using surfs > extract.

Surfaces which were not extracted properly were deleted and midsurface was generated using surface edit > offset > surfaces were selected using surfs > offset length was given > offset.

The extracted midsurface is given below.

Midsurface for ribs were generated by creating a midline between the parallel surfaces using lines > midline > line list were selected > create.

The existing surface was trimmed using this midline from surface edit > trim with lines > surfaces were selected using surfs > lines were selected using free lines > trim.

A surface was created between these lines using surfaces > ruled > lines were selected using line list > create.

Free lines were deleted after creating these surfaces.

The complete midsurface is given below.

Unnecessary trims were suppressed and mesh was generated with target size 5 mm based on the given quality criteria.

The generated mesh is given below.

Material was assigned to the mesh and property cards for thickness values 2.5 mm, 3 mm, 3.5mm...upto 7 mm and 10 mm, 27 mm were created. The thickness of each ribs were measured and properties with the closest thickness values were assigned to the ribs.

The mesh after assigning respective thicknesses to the ribs are given below.

Conclusion

1. The midsurface was generated and cleaned up.
2. Mesh was generated according to the given quality criteria.
3. Respective thicknesses were assigned to the ribs.